PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/03-16:58:00
G01     53.1           27.4                7.4 +/-    2.33      13.6 +/-    2.33  0.090 / 0.160
G06     177.4          22.9                9.9 +/-   14.11      20.3 +/-   14.11  0.080 / 0.140
G07     145.2          15.8               11.0 +/-    1.28      26.8 +/-    1.28  0.040 / 0.060
G11     45.5           17.8                8.8 +/-    2.15      20.3 +/-    2.15  0.050 / 0.050
G13     254.1          32.2                9.6 +/-    2.82      16.1 +/-    2.82  0.130 / 0.180
G15     289.0          15.5                9.0 +/-    1.02      22.0 +/-    1.02  0.210 / 0.300
G17     291.1          78.5               10.1 +/-    0.58      10.3 +/-    0.58  0.040 / 0.020
G19     240.3          54.4               10.8 +/-    3.02      12.9 +/-    3.02  0.030 / 0.020
G28     47.1           54.3                9.8 +/-    1.06      11.8 +/-    1.06  0.080 / 0.080
G30     148.2          45.4               11.3 +/-    0.38      15.2 +/-    0.38  0.110 / 0.090